| 1 | Chemistry | 1,577 | 78.4K | 250 | 286 |
| 2 | Chemical Engineering | 1,297 | 44.9K | 28 | 61 |
| 3 | Pollution | 775 | 41.2K | 69 | 96 |
| 4 | Materials | 966 | 33.7K | 150 | 224 |
| 5 | Catalysis | 739 | 31.7K | 64 | 93 |
| 6 | Biochemical Engineering | 714 | 29.5K | 29 | 78 |
| 7 | Nanotechnology | 645 | 28.8K | 146 | 194 |
| 8 | environmental pollution | 602 | 28.2K | 38 | 40 |
| 9 | Physics | 630 | 24.8K | 598 | 775 |
| 10 | Environmental Health | 422 | 21.2K | 170 | 181 |
| 11 | Biology | 282 | 21.1K | 756 | 729 |
| 12 | Biotechnology | 768 | 19.5K | 81 | 274 |
| 13 | Ecology | 461 | 19.0K | 317 | 431 |
| 14 | Biochemistry | 756 | 16.2K | 505 | 738 |
| 15 | Environmental Engineering | 246 | 15.3K | 134 | 142 |
| 16 | Environmental monitoring | 305 | 15.0K | 56 | 67 |
| 17 | Materials Science | 425 | 14.6K | 192 | 261 |
| 18 | Biocompatible Materials | 336 | 13.8K | 178 | 243 |
| 19 | Environment | 298 | 12.6K | 262 | 457 |
| 20 | Nanostructured Materials | 314 | 12.3K | 112 | 136 |
| 21 | Optical materials | 215 | 11.7K | 117 | 115 |
| 22 | Automation | 248 | 11.7K | 77 | 104 |
| 23 | Science | 300 | 11.5K | 790 | 1,035 |
| 24 | Microbiology | 381 | 11.4K | 409 | 595 |
| 25 | sanitation | 123 | 11.3K | 111 | 109 |
| 26 | nanoscience | 163 | 10.3K | 198 | 189 |
| 27 | Membranes | 180 | 10.0K | 63 | 63 |
| 28 | Colloids | 270 | 9.9K | 219 | 235 |
| 29 | Electrochemistry | 333 | 9.7K | 231 | 190 |
| 30 | Green Chemistry | 205 | 9.6K | 30 | 56 |
| 31 | Analytical Chemistry | 305 | 9.2K | 230 | 293 |
| 32 | Organic Chemistry | 375 | 9.1K | 48 | 121 |
| 33 | China | 444 | 9.1K | 55 | 52 |
| 34 | Water | 176 | 8.7K | 122 | 174 |
| 35 | Molecular Biology | 245 | 8.6K | 829 | 916 |
| 36 | Bioengineering | 294 | 8.4K | 161 | 380 |
| 37 | Biomedical Engineering | 371 | 8.3K | 161 | 319 |
| 38 | Nuclear Physics | 292 | 8.3K | 575 | 585 |
| 39 | Composite Materials | 162 | 8.0K | 200 | 183 |
| 40 | Surface Chemistry | 256 | 7.9K | 226 | 278 |
| 41 | Polymers | 379 | 7.6K | 272 | 409 |
| 42 | Building Materials | 125 | 7.5K | 104 | 86 |
| 43 | Toxicology | 167 | 7.1K | 418 | 363 |
| 44 | environmental protection | 188 | 6.9K | 110 | 161 |
| 45 | Bioorganic chemistry | 256 | 6.7K | 45 | 136 |
| 46 | Water pollution | 131 | 6.7K | 189 | 197 |
| 47 | Wireless Communication Systems | 161 | 6.5K | 156 | 141 |
| 48 | Food | 171 | 6.5K | 138 | 155 |
| 49 | Environmental Management | 156 | 6.2K | 94 | 150 |
| 50 | Biomass Energy | 155 | 6.2K | 82 | 164 |
| 51 | Signal Processing | 229 | 5.7K | 139 | 240 |
| 52 | food technology | 185 | 5.7K | 107 | 135 |
| 53 | Medicine | 202 | 5.6K | 1,090 | 1,268 |
| 54 | polymerization | 285 | 5.4K | 273 | 416 |
| 55 | Pharmaceutical Chemistry | 273 | 5.4K | 169 | 343 |
| 56 | Quantum Gravity | 139 | 5.3K | 411 | 401 |
| 57 | Agricultural Chemistry | 132 | 5.2K | 147 | 136 |
| 58 | Sustainable Engineering | 112 | 5.2K | 52 | 71 |
| 59 | Industrial Engineering | 190 | 5.2K | 41 | 67 |
| 60 | Research | 261 | 5.0K | 766 | 1,038 |
| 61 | Environmental Toxicology | 135 | 4.9K | 85 | 142 |
| 62 | energy conservation | 67 | 4.9K | 226 | 193 |
| 63 | Industrial Microbiology | 161 | 4.9K | 29 | 97 |
| 64 | Environmental pollutants | 116 | 4.8K | 86 | 81 |
| 65 | Artificial Intelligence | 209 | 4.8K | 168 | 330 |
| 66 | Manufacturing Processes | 169 | 4.7K | 112 | 128 |
| 67 | Nanoparticles | 165 | 4.7K | 61 | 113 |
| 68 | clay | 56 | 4.6K | 27 | 10 |
| 69 | Technology | 203 | 4.5K | 216 | 304 |
| 70 | Energy Policy | 78 | 4.5K | 285 | 263 |
| 71 | Renewable Energy Sources | 62 | 4.3K | 343 | 370 |
| 72 | Neural circuitry | 131 | 4.2K | 74 | 100 |
| 73 | Mathematics | 295 | 4.1K | 617 | 579 |
| 74 | Optics | 242 | 4.1K | 380 | 452 |
| 75 | Environmental Policy | 88 | 3.9K | 339 | 420 |
| 76 | Cybernetics | 71 | 3.8K | 153 | 158 |
| 77 | fuel cells | 52 | 3.8K | 166 | 160 |
| 78 | Spectrum analysis | 158 | 3.7K | 516 | 767 |
| 79 | Pharmacology | 127 | 3.6K | 743 | 780 |
| 80 | Medical Laboratory Science | 99 | 3.6K | 136 | 216 |
| 81 | Natural history | 13 | 3.5K | 1,475 | 1,120 |
| 82 | Pharmaceutical Technology | 94 | 3.5K | 56 | 65 |
| 83 | Systems Engineering | 125 | 3.4K | 90 | 116 |
| 84 | Physical organic chemistry | 136 | 3.4K | 15 | 28 |
| 85 | Nutrition | 85 | 3.3K | 625 | 598 |
| 86 | miniaturization | 64 | 3.3K | 252 | 307 |
| 87 | Electronics | 150 | 3.3K | 333 | 389 |
| 88 | Production Engineering | 153 | 3.3K | 77 | 86 |
| 89 | Chromatographic analysis | 226 | 3.2K | 17 | 43 |
| 90 | Telecommunication | 81 | 3.2K | 353 | 342 |
| 91 | Mechanical Engineering | 201 | 3.2K | 87 | 115 |
| 92 | pollutants | 78 | 3.1K | 123 | 139 |
| 93 | Energy Conversion | 51 | 3.1K | 164 | 258 |
| 94 | catalytic activity | 75 | 3.0K | 14 | 23 |
| 95 | Chromatography | 188 | 2.9K | 16 | 39 |
| 96 | Microelectronics | 34 | 2.8K | 447 | 300 |
| 97 | Mobile Computing | 63 | 2.8K | 84 | 64 |
| 98 | internet | 86 | 2.8K | 85 | 120 |
| 99 | Internet of Things | 86 | 2.8K | 75 | 100 |
| 100 | Magnetic Materials | 73 | 2.7K | 139 | 128 |
| 101 | Control Theory | 138 | 2.7K | 106 | 165 |
| 102 | computer networks | 123 | 2.5K | 154 | 254 |
| 103 | Environmental Law | 38 | 2.5K | 161 | 173 |
| 104 | Electrophoresis | 151 | 2.5K | 23 | 94 |
| 105 | Statistical physics | 121 | 2.5K | 569 | 651 |
| 106 | Food additives | 40 | 2.5K | 129 | 116 |
| 107 | Carbon | 39 | 2.5K | 190 | 200 |
| 108 | hydrocolloids | 36 | 2.5K | 92 | 95 |
| 109 | concrete | 47 | 2.4K | 122 | 152 |
| 110 | Engineering | 157 | 2.4K | 291 | 431 |
| 111 | environmental exposure | 67 | 2.4K | 137 | 150 |
| 112 | Image Processing | 135 | 2.3K | 138 | 364 |
| 113 | Chemical industry | 145 | 2.3K | 49 | 38 |
| 114 | Biophysics | 107 | 2.3K | 939 | 1,175 |
| 115 | Energy Storage | 50 | 2.2K | 145 | 137 |
| 116 | Photonics | 77 | 2.2K | 273 | 391 |
| 117 | Molecular Spectroscopy | 62 | 2.2K | 170 | 93 |
| 118 | Environmental Chemistry | 46 | 2.2K | 297 | 407 |
| 119 | energy resources | 24 | 2.2K | 338 | 265 |
| 120 | Intelligent Transportation Systems | 64 | 2.1K | 88 | 135 |
| 121 | actuators | 54 | 2.0K | 357 | 346 |
| 121 | transducers | 54 | 2.0K | 357 | 346 |
| 123 | Clinical Chemistry | 80 | 2.0K | 370 | 506 |
| 124 | Tribology | 78 | 1.9K | 84 | 99 |
| 125 | Structural Engineering | 86 | 1.9K | 189 | 244 |
| 126 | Ocean Engineering | 75 | 1.8K | 225 | 290 |
| 127 | Information Science | 72 | 1.8K | 245 | 412 |
| 128 | Earthquake Engineering | 72 | 1.7K | 191 | 257 |
| 129 | Biosensors | 34 | 1.7K | 220 | 264 |
| 130 | Fracture mechanics | 97 | 1.7K | 113 | 185 |
| 131 | lasers | 92 | 1.7K | 216 | 256 |
| 132 | Microbial Ecology | 63 | 1.6K | 363 | 627 |
| 133 | Soil Mechanics | 72 | 1.6K | 126 | 206 |
| 134 | Solar Energy | 29 | 1.6K | 344 | 270 |
| 135 | Nanostructures | 66 | 1.5K | 158 | 411 |
| 136 | Environmental Microbiology | 23 | 1.5K | 348 | 325 |
| 137 | enzymes | 60 | 1.5K | 135 | 221 |
| 138 | Robotics | 67 | 1.5K | 192 | 276 |
| 139 | Metals | 54 | 1.5K | 360 | 436 |
| 140 | Social Change | 20 | 1.5K | 229 | 183 |
| 141 | International Finance | 41 | 1.5K | 284 | 230 |
| 142 | Operations Research | 41 | 1.5K | 546 | 473 |
| 143 | Ultrasonics | 30 | 1.4K | 230 | 172 |
| 144 | Bioinformatics | 76 | 1.4K | 227 | 471 |
| 145 | Bioelectronics | 23 | 1.4K | 255 | 270 |
| 146 | Cytology | 30 | 1.4K | 1,246 | 1,225 |
| 147 | Pharmacognosy | 56 | 1.4K | 231 | 378 |
| 148 | soil microbiology | 16 | 1.4K | 563 | 460 |
| 149 | Mechatronics | 35 | 1.3K | 121 | 102 |
| 150 | Mathematical Physics | 100 | 1.3K | 431 | 593 |
| 151 | Energy Harvesting | 13 | 1.3K | 160 | 148 |
| 152 | Detectors | 89 | 1.3K | 66 | 168 |
| 153 | Economics | 59 | 1.3K | 977 | 925 |
| 154 | Thermodynamics | 38 | 1.3K | 159 | 68 |
| 155 | Electrical Engineering | 52 | 1.3K | 730 | 459 |
| 156 | Telecommunication Systems | 97 | 1.3K | 52 | 127 |
| 157 | finance | 46 | 1.3K | 499 | 500 |
| 158 | Lightweight concrete | 18 | 1.2K | 99 | 117 |
| 159 | Process Control | 31 | 1.2K | 122 | 248 |
| 160 | Thermochemistry | 26 | 1.2K | 91 | 47 |
| 161 | synthesis | 105 | 1.2K | 10 | 24 |
| 162 | System analysis | 74 | 1.2K | 254 | 437 |
| 163 | pigments | 54 | 1.2K | 53 | 71 |
| 164 | Computer Graphics | 81 | 1.2K | 175 | 339 |
| 165 | Solid State Physics | 93 | 1.2K | 795 | 1,073 |
| 166 | Drug delivery systems | 48 | 1.1K | 165 | 385 |
| 167 | toxicity testing | 29 | 1.1K | 47 | 31 |
| 168 | Business | 17 | 1.1K | 888 | 763 |
| 169 | Genetic engineering | 26 | 1.1K | 581 | 553 |
| 170 | Medicinal plants | 43 | 1.1K | 179 | 299 |
| 171 | Enzyme | 37 | 1.1K | 24 | 60 |
| 172 | management | 42 | 1.1K | 872 | 1,116 |
| 172 | Condensed Matter | 86 | 1.1K | 723 | 990 |
| 174 | Engineering Geology | 37 | 1.1K | 281 | 312 |
| 175 | natural products | 50 | 1.1K | 229 | 301 |
| 176 | Nanochemistry | 51 | 1.0K | 67 | 82 |
| 177 | coal | 39 | 1.0K | 294 | 470 |
| 178 | Power Electronics | 25 | 981 | 301 | 335 |
| 179 | Pesticides | 39 | 976 | 55 | 48 |
| 180 | Social Sciences | 51 | 974 | 625 | 665 |
| 181 | Microorganisms | 8 | 969 | 572 | 329 |
| 182 | solar power | 11 | 967 | 315 | 174 |
| 182 | solar cells | 11 | 967 | 354 | 196 |
| 184 | nucleic acids | 10 | 959 | 853 | 656 |
| 185 | Physical Chemistry | 19 | 947 | 883 | 702 |
| 185 | Electrochemical Analysis | 38 | 947 | 294 | 331 |
| 187 | Microbial Biotechnology | 47 | 938 | 33 | 99 |
| 188 | Hazardous waste | 34 | 929 | 72 | 248 |
| 189 | Medical Microbiology | 6 | 922 | 1,335 | 767 |
| 190 | Energy Consumption | 10 | 920 | 135 | 85 |
| 191 | Drug design | 50 | 918 | 128 | 329 |
| 192 | Chemical processes | 50 | 909 | 25 | 53 |
| 193 | Information Systems | 30 | 907 | 222 | 231 |
| 194 | Information Technology | 49 | 906 | 297 | 631 |
| 194 | Sonochemistry | 21 | 906 | 84 | 127 |
| 196 | Astrophysics | 59 | 895 | 887 | 1,187 |
| 197 | Engineering Mathematics | 55 | 890 | 231 | 320 |
| 197 | drug evaluation | 32 | 890 | 194 | 208 |
| 199 | Solid State Chemistry | 55 | 889 | 501 | 648 |
| 200 | vibration | 30 | 887 | 239 | 264 |
| 201 | Cement | 11 | 882 | 248 | 222 |
| 202 | food handling | 25 | 880 | 138 | 159 |
| 203 | Quality Control | 25 | 879 | 361 | 322 |
| 204 | Humanities | 45 | 875 | 138 | 114 |
| 205 | Heat Exchangers | 34 | 874 | 215 | 347 |
| 206 | Geotechnical Engineering | 33 | 855 | 96 | 113 |
| 207 | radioactive waste | 26 | 840 | 78 | 257 |
| 207 | industrial waste | 26 | 840 | 93 | 258 |
| 209 | Food Microbiology | 16 | 839 | 418 | 402 |
| 210 | Analytical Biochemistry | 56 | 830 | 151 | 395 |
| 211 | biocatalysis | 5 | 828 | 105 | 143 |
| 211 | Homogeneous catalysis | 5 | 828 | 105 | 143 |
| 211 | Heterogeneous catalysis | 5 | 828 | 105 | 143 |
| 214 | Multimedia Systems | 68 | 827 | 139 | 302 |
| 215 | biological factors | 31 | 809 | 405 | 483 |
| 216 | Plastics | 36 | 804 | 297 | 331 |
| 217 | Structural dynamics | 21 | 801 | 320 | 349 |
| 218 | Aging | 3 | 792 | 2,208 | 783 |
| 219 | Metallurgy | 33 | 788 | 589 | 636 |
| 220 | Computational Biology | 40 | 784 | 522 | 778 |
| 221 | Geriatrics | 2 | 780 | 2,770 | 780 |
| 222 | Developmental Biology | 2 | 777 | 1,916 | 767 |
| 223 | Production Management | 22 | 766 | 325 | 524 |
| 224 | Dynamics | 30 | 749 | 357 | 250 |
| 225 | mass transfer | 24 | 746 | 579 | 583 |
| 226 | Ceramic materials | 27 | 736 | 297 | 306 |
| 226 | Molecular structure | 44 | 736 | 448 | 698 |
| 228 | Numerical Analysis | 55 | 731 | 376 | 538 |
| 228 | Nervous system | 22 | 731 | 808 | 866 |
| 230 | Physiology | 24 | 726 | 1,407 | 1,436 |
| 231 | Economic History | 38 | 719 | 830 | 832 |
| 232 | city planning | 23 | 710 | 478 | 428 |
| 233 | Pharmacy | 29 | 708 | 561 | 631 |
| 234 | Botany | 24 | 705 | 1,432 | 1,495 |
| 235 | Organometallic chemistry | 58 | 704 | 231 | 439 |
| 236 | Psychoneuroimmunology | 2 | 676 | 684 | 226 |
| 236 | Neuroimmunology | 2 | 676 | 759 | 250 |
| 238 | Fiber Optics | 26 | 667 | 246 | 239 |
| 239 | Cell Biology | 20 | 654 | 1,420 | 1,633 |
| 240 | drugs | 30 | 650 | 481 | 610 |
| 240 | Fuzzy systems | 31 | 650 | 259 | 216 |
| 242 | Transportation | 27 | 646 | 454 | 566 |
| 243 | Light | 3 | 636 | 872 | 529 |
| 244 | Computational Intelligence | 23 | 629 | 83 | 83 |
| 245 | gastrointestinal tract | 2 | 626 | 404 | 102 |
| 246 | Fluid Mechanics | 26 | 623 | 441 | 460 |
| 247 | Organometallic compounds | 40 | 619 | 234 | 425 |
| 248 | Housing | 10 | 616 | 181 | 103 |
| 249 | drug toxicity | 10 | 612 | 105 | 45 |
| 250 | Genetic regulation | 15 | 605 | 378 | 444 |
| 251 | Evolutionary Computation | 12 | 604 | 132 | 208 |
| 252 | Surface-Active Agents | 20 | 602 | 227 | 335 |
| 252 | Surface properties | 20 | 602 | 254 | 376 |
| 254 | Soil dynamics | 28 | 595 | 79 | 131 |
| 255 | biopolymers | 23 | 593 | 346 | 413 |
| 256 | Urban Planning | 9 | 592 | 151 | 86 |
| 256 | community development | 9 | 592 | 264 | 90 |
| 256 | Population | 9 | 592 | 443 | 251 |
| 256 | rehabilitation | 12 | 592 | 978 | 728 |
| 260 | Heterocyclic compounds | 37 | 591 | 123 | 87 |
| 261 | energy development | 11 | 590 | 283 | 341 |
| 262 | visualization | 41 | 584 | 282 | 260 |
| 263 | Computer Science | 37 | 579 | 328 | 403 |
| 264 | Human-Computer Interaction | 26 | 566 | 305 | 470 |
| 265 | commerce | 24 | 565 | 353 | 536 |
| 266 | Crystal growth | 13 | 561 | 434 | 309 |
| 267 | isomerism | 32 | 560 | 15 | 29 |
| 267 | Chirality | 32 | 560 | 15 | 29 |
| 269 | Nonlinear Dynamics | 29 | 550 | 685 | 801 |
| 270 | Educational Technology | 17 | 549 | 541 | 482 |
| 271 | Diet | 14 | 547 | 810 | 934 |
| 272 | Technological Innovations | 11 | 545 | 416 | 309 |
| 273 | Zeolites | 22 | 542 | 216 | 330 |
| 274 | proteins | 24 | 536 | 621 | 716 |
| 275 | food industry | 38 | 534 | 44 | 77 |
| 276 | Photochemistry | 25 | 532 | 432 | 584 |
| 277 | Measurement | 27 | 531 | 282 | 337 |
| 277 | Nonlinear systems | 22 | 531 | 109 | 126 |
| 279 | Asia | 30 | 527 | 637 | 625 |
| 280 | Semiconductors | 29 | 525 | 562 | 570 |
| 281 | Ultrasound | 9 | 522 | 361 | 210 |
| 282 | Mass Spectrometry | 50 | 517 | 142 | 398 |
| 283 | Ultrasonic Imaging | 8 | 512 | 250 | 103 |
| 284 | Photobiology | 24 | 511 | 257 | 409 |
| 285 | Luminescence | 26 | 505 | 288 | 289 |
| 286 | Lipids | 18 | 492 | 401 | 566 |
| 287 | health planning | 27 | 486 | 570 | 638 |
| 288 | Computer Vision | 23 | 485 | 302 | 530 |
| 289 | Drug targeting | 14 | 483 | 46 | 74 |
| 290 | Adaptive control systems | 31 | 476 | 62 | 91 |
| 291 | economic policy | 26 | 470 | 704 | 673 |
| 292 | Geophysics | 26 | 469 | 1,231 | 1,511 |
| 293 | Ceramics | 30 | 465 | 336 | 460 |
| 294 | Metallography | 25 | 464 | 151 | 241 |
| 295 | Marine Biology | 13 | 463 | 1,249 | 1,152 |
| 296 | Public Health | 14 | 461 | 2,325 | 2,069 |
| 297 | Cell differentiation | 1 | 460 | 1,673 | 845 |
| 297 | Stem cells | 1 | 460 | 1,579 | 621 |
| 297 | cloning | 1 | 460 | 819 | 336 |
| 300 | Transnational corporations | 13 | 459 | 54 | 64 |
| 301 | Oncology | 10 | 458 | 1,003 | 1,205 |
| 302 | Cognitive Radio Networks | 20 | 456 | 26 | 48 |
| 303 | Smart Materials | 25 | 454 | 180 | 303 |
| 303 | supercritical fluids | 13 | 454 | 132 | 141 |
| 305 | Japan | 23 | 452 | 446 | 404 |
| 306 | Water quality management | 25 | 451 | 472 | 570 |
| 307 | Biopharmaceutics | 17 | 447 | 332 | 426 |
| 308 | Soft Condensed Matter | 14 | 433 | 464 | 452 |
| 308 | Synthetic biology | 18 | 433 | 69 | 100 |
| 310 | Systems Analysis | 28 | 432 | 186 | 285 |
| 311 | Glass | 28 | 424 | 245 | 414 |
| 311 | pottery | 28 | 424 | 239 | 412 |
| 313 | Industry | 6 | 422 | 60 | 77 |
| 314 | Tourism | 8 | 421 | 983 | 865 |
| 315 | Marine Pollution | 10 | 420 | 616 | 594 |
| 316 | Urban Policy | 10 | 415 | 365 | 294 |
| 316 | Cosmology | 23 | 415 | 133 | 260 |
| 318 | carbon monoxide | 12 | 413 | 60 | 109 |
| 318 | mathematical analysis | 40 | 413 | 732 | 857 |
| 320 | food contamination | 23 | 410 | 151 | 222 |
| 321 | Metabolism | 11 | 407 | 1,140 | 1,240 |
| 321 | environmental indicators | 10 | 407 | 553 | 592 |
| 323 | Computational Complexity | 34 | 403 | 89 | 168 |
| 324 | Nuclear Engineering | 27 | 400 | 434 | 411 |
| 324 | particles | 30 | 400 | 127 | 270 |
| 326 | Pharmacokinetics | 11 | 398 | 304 | 335 |
| 327 | Cancer | 15 | 394 | 1,203 | 1,467 |
| 328 | Structural design | 23 | 392 | 166 | 286 |
| 328 | Chemical analysis | 11 | 392 | 509 | 456 |
| 330 | United States | 22 | 390 | 1,784 | 1,982 |
| 331 | Sustainable Development | 14 | 388 | 773 | 987 |
| 331 | dietary supplements | 22 | 388 | 124 | 294 |
| 333 | Neurology | 22 | 382 | 1,666 | 2,178 |
| 334 | Small Business | 5 | 376 | 571 | 567 |
| 335 | Nanobiotechnology | 12 | 373 | 106 | 227 |
| 336 | Land use | 10 | 368 | 551 | 509 |
| 337 | Soil Science | 7 | 357 | 1,215 | 954 |
| 338 | Industrial Safety | 11 | 353 | 505 | 451 |
| 338 | Herbal medicine | 12 | 353 | 227 | 323 |
| 340 | Egypt | 8 | 351 | 196 | 156 |
| 341 | Virology | 5 | 350 | 1,837 | 1,598 |
| 342 | machinery | 24 | 346 | 145 | 239 |
| 343 | Enzyme inhibitors | 14 | 344 | 75 | 114 |
| 344 | Swarm Intelligence | 7 | 337 | 109 | 115 |
| 344 | multimedia | 16 | 337 | 147 | 251 |
| 344 | Interactive multimedia | 16 | 337 | 157 | 259 |
| 347 | Quantum electronics | 18 | 334 | 609 | 623 |
| 348 | Materials Engineering | 20 | 332 | 102 | 123 |
| 349 | Biodiversity | 28 | 331 | 579 | 1,102 |
| 350 | Recycling | 4 | 326 | 484 | 478 |
| 351 | Catalysts | 27 | 324 | 79 | 239 |
| 352 | Optical Communications | 38 | 321 | 94 | 260 |
| 353 | Waste management | 18 | 319 | 420 | 508 |
| 353 | ecosystem | 11 | 319 | 628 | 804 |
| 355 | Iron | 11 | 318 | 123 | 94 |
| 356 | Mechanics | 21 | 312 | 371 | 471 |
| 357 | software | 5 | 304 | 781 | 581 |
| 358 | Systems Biology | 8 | 303 | 829 | 721 |
| 359 | Granular materials | 18 | 298 | 100 | 216 |
| 360 | Geodesy | 8 | 297 | 343 | 262 |
| 361 | Hydrology | 19 | 291 | 911 | 1,238 |
| 361 | Investment analysis | 13 | 291 | 271 | 367 |
| 363 | Mineral resources | 15 | 288 | 107 | 318 |
| 364 | Friction | 5 | 287 | 59 | 43 |
| 365 | Endocrinology | 11 | 286 | 1,312 | 1,549 |
| 366 | Informatics | 16 | 283 | 247 | 433 |
| 367 | Diagnostic Imaging | 13 | 280 | 770 | 869 |
| 367 | Solitons | 18 | 280 | 309 | 519 |
| 367 | Fractals | 18 | 280 | 312 | 522 |
| 367 | Chaos | 18 | 280 | 309 | 519 |
| 371 | Neurophysiology | 12 | 273 | 1,340 | 1,550 |
| 372 | Genetic algorithms | 5 | 267 | 211 | 282 |
| 373 | Agriculture | 12 | 266 | 961 | 1,104 |
| 374 | Cell death | 3 | 261 | 970 | 836 |
| 375 | Psychology | 37 | 258 | 1,303 | 2,320 |
| 376 | Bioremediation | 12 | 257 | 224 | 427 |
| 376 | genome | 12 | 257 | 627 | 1,025 |
| 378 | Calorimetry | 14 | 254 | 428 | 481 |
| 378 | Thermal analysis | 14 | 254 | 428 | 481 |
| 380 | Sociology | 22 | 253 | 1,002 | 1,486 |
| 380 | Remote Sensing | 11 | 253 | 716 | 602 |
| 382 | Nonlinear functional analysis | 13 | 252 | 495 | 502 |
| 383 | Civil Engineering | 32 | 251 | 323 | 447 |
| 384 | Biodegradation | 10 | 250 | 255 | 417 |
| 385 | Regional Planning | 19 | 246 | 544 | 808 |
| 386 | Crystallography | 55 | 243 | 244 | 532 |
| 387 | Health Information Management | 4 | 241 | 221 | 398 |
| 388 | Nuclear Energy | 17 | 240 | 333 | 395 |
| 389 | Cartography | 5 | 238 | 303 | 105 |
| 389 | nuclear astrophysics | 21 | 238 | 102 | 299 |
| 391 | Oral Medicine | 4 | 229 | 654 | 248 |
| 392 | Computer Engineering | 8 | 227 | 472 | 344 |
| 392 | Communication | 25 | 227 | 615 | 1,177 |
| 394 | Genetics | 11 | 226 | 1,654 | 2,175 |
| 395 | Brain | 14 | 225 | 1,169 | 1,533 |
| 396 | Geochemistry | 16 | 224 | 861 | 1,232 |
| 397 | biomedicine | 8 | 221 | 197 | 279 |
| 398 | soil pollution | 10 | 220 | 164 | 231 |
| 399 | East Asia | 15 | 219 | 151 | 134 |
| 400 | Hydrodynamics | 11 | 214 | 262 | 382 |
| 400 | Molecules | 23 | 214 | 529 | 765 |
| 400 | Capital market | 6 | 214 | 247 | 247 |
| 403 | peptides | 9 | 213 | 342 | 302 |
| 404 | Business Ethics | 6 | 211 | 693 | 956 |
| 405 | Chronobiology | 8 | 210 | 194 | 198 |
| 405 | biological clocks | 8 | 210 | 194 | 198 |
| 405 | circadian rhythm | 8 | 210 | 194 | 198 |
| 405 | biological rhythms | 8 | 210 | 175 | 194 |
| 409 | international trade | 2 | 208 | 931 | 352 |
| 410 | Rock Mechanics | 14 | 203 | 374 | 592 |
| 410 | Eastern Europe | 17 | 203 | 190 | 220 |
| 412 | Plant physiology | 8 | 202 | 1,310 | 1,558 |
| 413 | Circadian rhythms | 7 | 201 | 146 | 190 |
| 413 | Strategic planning | 7 | 201 | 428 | 477 |
| 415 | Structural optimization | 10 | 198 | 148 | 224 |
| 416 | Food Science | 6 | 191 | 79 | 54 |
| 417 | Medical Physics | 16 | 189 | 640 | 1,008 |
| 417 | soil conservation | 8 | 189 | 382 | 517 |
| 417 | Water Purification | 15 | 189 | 384 | 593 |
| 420 | Histology | 15 | 188 | 769 | 1,189 |
| 421 | Functional Analysis | 21 | 187 | 466 | 740 |
| 421 | Psychophysiology | 9 | 187 | 1,483 | 1,780 |
| 423 | Entropy | 13 | 185 | 400 | 504 |
| 423 | Australia | 8 | 185 | 1,051 | 934 |
| 425 | Public Policy | 9 | 184 | 938 | 1,151 |
| 425 | Marine Geology | 19 | 184 | 145 | 376 |
| 425 | Marine Geophysics | 19 | 184 | 32 | 94 |
| 425 | Marine mineral resources | 19 | 184 | 15 | 39 |
| 425 | economic analysis | 7 | 184 | 101 | 114 |
| 425 | Seabed | 19 | 184 | 15 | 39 |
| 431 | Heterocyclic chemistry | 17 | 183 | 94 | 99 |
| 432 | Astronomy | 23 | 181 | 1,103 | 1,798 |
| 433 | human development | 16 | 179 | 270 | 600 |
| 434 | Lipid metabolism | 2 | 178 | 506 | 321 |
| 434 | Lipid | 2 | 178 | 508 | 323 |
| 436 | Tunneling | 5 | 177 | 248 | 299 |
| 436 | underground construction | 5 | 177 | 248 | 299 |
| 438 | clay minerals | 6 | 175 | 145 | 190 |
| 439 | bioluminescence | 10 | 174 | 101 | 89 |
| 440 | sustainability | 9 | 173 | 395 | 749 |
| 441 | Atmospheric Physics | 12 | 169 | 738 | 1,119 |
| 442 | Porous materials | 14 | 166 | 190 | 339 |
| 442 | Immunity | 2 | 166 | 1,631 | 1,441 |
| 444 | plasticity | 2 | 164 | 402 | 358 |
| 445 | Visual Communication | 14 | 162 | 79 | 175 |
| 445 | Computer-Aided Design | 10 | 162 | 592 | 756 |
| 445 | Image enhancement | 14 | 162 | 65 | 165 |
| 448 | Health | 3 | 160 | 1,938 | 1,321 |
| 448 | Biomolecules | 9 | 160 | 163 | 403 |
| 450 | Nuclear Fusion | 7 | 159 | 352 | 310 |
| 450 | biofuels | 1 | 159 | 484 | 348 |
| 450 | fusion reactors | 7 | 159 | 245 | 151 |
| 450 | Stress | 2 | 159 | 378 | 184 |
| 450 | Autism | 1 | 159 | 1,008 | 566 |
| 455 | Securities | 5 | 157 | 187 | 240 |
| 455 | ozone | 8 | 157 | 26 | 42 |
| 457 | Biomechanics | 11 | 155 | 601 | 910 |
| 457 | protein | 11 | 155 | 564 | 805 |
| 459 | Electromagnetism | 6 | 154 | 716 | 625 |
| 459 | biological monitoring | 8 | 154 | 214 | 359 |
| 461 | Genomics | 8 | 152 | 1,694 | 2,064 |
| 461 | Flexible electronics | 3 | 152 | 69 | 83 |
| 461 | Bioinorganic chemistry | 10 | 152 | 797 | 1,022 |
| 464 | Nanophotonics | 5 | 151 | 230 | 272 |
| 465 | Cognitive Science | 17 | 150 | 542 | 1,278 |
| 465 | optical devices | 8 | 150 | 218 | 267 |
| 467 | Combustion | 8 | 149 | 750 | 888 |
| 468 | Financial Engineering | 3 | 146 | 112 | 81 |
| 468 | Host-parasite interactions | 1 | 146 | 1,588 | 1,100 |
| 468 | Virulence | 1 | 146 | 1,351 | 1,057 |
| 471 | Calculus of Variations | 5 | 145 | 431 | 281 |
| 471 | Gene expression regulation | 14 | 145 | 340 | 703 |
| 473 | Liquid chromatography | 15 | 144 | 113 | 155 |
| 474 | Cognitive neuroscience | 17 | 143 | 372 | 833 |
| 475 | Microbial Metabolism | 4 | 142 | 109 | 167 |
| 476 | Raman spectroscopy | 10 | 141 | 343 | 578 |
| 477 | Decision making | 11 | 140 | 677 | 1,052 |
| 477 | Developing countries | 8 | 140 | 1,353 | 1,573 |
| 479 | Chromosome mapping | 8 | 139 | 966 | 1,410 |
| 479 | Cosmochemistry | 5 | 139 | 675 | 738 |
| 479 | gene mapping | 8 | 139 | 1,042 | 1,570 |
| 482 | Plant Ecology | 1 | 138 | 2,329 | 1,515 |
| 482 | Information visualization | 18 | 138 | 16 | 36 |
| 482 | Radiation effects | 1 | 138 | 1,076 | 590 |
| 485 | Gastrointestinal diseases | 1 | 137 | 968 | 372 |
| 486 | Agricultural Engineering | 3 | 136 | 439 | 338 |
| 487 | Statistics | 21 | 135 | 1,030 | 1,486 |
| 488 | Chemical kinetics | 17 | 134 | 168 | 291 |
| 489 | Alternative Medicine | 9 | 133 | 740 | 1,204 |
| 489 | complementary therapies | 9 | 133 | 823 | 1,263 |
| 491 | Neuroplasticity | 14 | 132 | 20 | 224 |
| 492 | Greenhouse gases | 4 | 131 | 223 | 303 |
| 493 | Municipal Engineering | 3 | 130 | 342 | 238 |
| 494 | Multiphase Flow | 7 | 128 | 218 | 338 |
| 495 | stocks | 3 | 127 | 118 | 148 |
| 496 | World Wide Web | 13 | 125 | 70 | 193 |
| 497 | Reproductive toxicology | 4 | 124 | 314 | 347 |
| 498 | glycoproteins | 4 | 121 | 377 | 384 |
| 498 | Glycoconjugates | 4 | 121 | 377 | 384 |
| 498 | Oligosaccharides | 4 | 121 | 189 | 183 |
| 498 | glycolipids | 4 | 121 | 377 | 384 |
| 502 | Europe | 9 | 120 | 1,648 | 1,893 |
| 503 | Optoelectronics | 33 | 119 | 49 | 206 |
| 504 | Atomic spectroscopy | 11 | 118 | 563 | 822 |
| 505 | Proteome | 3 | 115 | 1,011 | 1,022 |
| 506 | Ergonomics | 9 | 114 | 509 | 674 |
| 507 | Neuropsychology | 7 | 113 | 1,379 | 1,726 |
| 507 | electric vehicles | 8 | 113 | 138 | 277 |
| 507 | brain mapping | 7 | 113 | 377 | 626 |
| 510 | Telecommunications | 15 | 111 | 181 | 478 |
| 511 | Microcirculation | 7 | 109 | 250 | 391 |
| 511 | Behavior | 4 | 109 | 2,403 | 2,762 |
| 513 | Oxidative stress | 2 | 108 | 989 | 1,112 |
| 513 | Soil biology | 2 | 108 | 990 | 1,001 |
| 513 | antibiotics | 4 | 108 | 154 | 170 |
| 516 | Steroids | 5 | 106 | 652 | 770 |
| 517 | human behavior | 3 | 105 | 2,264 | 2,513 |
| 518 | mutation | 1 | 103 | 839 | 597 |
| 518 | Chromosomes | 1 | 103 | 1,249 | 875 |
| 520 | plasma spraying | 8 | 102 | 96 | 185 |
| 521 | Education | 5 | 101 | 2,768 | 2,407 |
| 521 | Immunology | 8 | 101 | 1,660 | 2,357 |
| 521 | Mineralogy | 11 | 101 | 697 | 1,038 |
| 521 | Flow chemistry | 16 | 101 | 3 | 8 |
| 525 | Bioavailability | 2 | 100 | 108 | 49 |
| 526 | Hormones | 4 | 98 | 957 | 1,098 |
| 526 | Human Resources | 2 | 98 | 621 | 615 |
| 528 | air quality management | 10 | 97 | 173 | 515 |
| 528 | Computational Fluid Dynamics | 9 | 97 | 304 | 560 |
| 528 | Entrepreneurship | 4 | 97 | 880 | 1,161 |
| 528 | Futures | 5 | 97 | 219 | 251 |
| 532 | Neurochemistry | 6 | 96 | 1,502 | 1,913 |
| 532 | Quantum Optics | 9 | 96 | 495 | 670 |
| 532 | Laser Spectroscopy | 9 | 96 | 436 | 626 |
| 532 | Fisheries | 3 | 96 | 1,508 | 1,274 |
| 536 | Quantum theory | 11 | 95 | 518 | 795 |
| 537 | Blood vessels | 4 | 94 | 299 | 346 |
| 537 | free radicals | 2 | 94 | 1,366 | 1,422 |
| 537 | pharmaceutical industry | 7 | 94 | 311 | 440 |
| 540 | Molecular cloning | 3 | 93 | 1,341 | 1,235 |
| 540 | Genetic recombination | 3 | 93 | 1,321 | 1,224 |
| 540 | Recombinant DNA | 3 | 93 | 1,387 | 1,277 |
| 540 | amino acids | 1 | 93 | 982 | 590 |
| 544 | personality | 12 | 92 | 725 | 1,496 |
| 545 | Geography | 7 | 91 | 1,319 | 1,728 |
| 545 | Information Theory | 6 | 91 | 1,014 | 1,154 |
| 545 | Industrial Design | 2 | 91 | 391 | 281 |
| 545 | Molecular evolution | 4 | 91 | 1,208 | 1,562 |
| 545 | radar | 4 | 91 | 129 | 111 |
| 545 | Sonar | 4 | 91 | 115 | 97 |
| 545 | Navigation | 4 | 91 | 229 | 152 |
| 552 | Adhesion | 11 | 89 | 223 | 573 |
| 552 | Obesity | 3 | 89 | 1,603 | 1,771 |
| 552 | cell interaction | 5 | 89 | 728 | 1,071 |
| 552 | adhesives | 11 | 89 | 238 | 578 |
| 556 | fishing industry | 2 | 88 | 151 | 75 |
| 556 | Imaging systems | 14 | 88 | 194 | 492 |
| 558 | Intelligent Control Systems | 14 | 87 | 366 | 680 |
| 559 | Developmental Psychology | 8 | 86 | 600 | 986 |
| 559 | Career development | 1 | 86 | 827 | 338 |
| 559 | Flexible manufacturing systems | 5 | 86 | 243 | 411 |
| 559 | Corporate governance | 4 | 86 | 515 | 695 |
| 559 | probabilities | 19 | 86 | 532 | 853 |
| 564 | Ecological Engineering | 1 | 85 | 1,105 | 847 |
| 564 | Organizational Behavior | 2 | 85 | 702 | 716 |
| 566 | Meteorology | 3 | 84 | 1,916 | 2,075 |
| 566 | atmosphere | 3 | 84 | 750 | 834 |
| 568 | Medical Technology | 8 | 80 | 855 | 1,476 |
| 568 | Radiography | 3 | 80 | 662 | 859 |
| 570 | Cellular senescence | 1 | 79 | 619 | 682 |
| 570 | Corporate Social Responsibility | 3 | 79 | 280 | 555 |
| 570 | environmental auditing | 3 | 79 | 293 | 561 |
| 573 | Magnetic Resonance Spectroscopy | 8 | 78 | 672 | 866 |
| 573 | nuclear power | 5 | 78 | 339 | 289 |
| 575 | technical education | 4 | 77 | 565 | 601 |
| 576 | micromechanics | 5 | 76 | 430 | 611 |
| 576 | Food inspection | 5 | 76 | 14 | 35 |
| 576 | food quality | 5 | 76 | 14 | 35 |
| 579 | Soil ecology | 1 | 75 | 1,223 | 958 |
| 580 | Groundwater | 1 | 74 | 970 | 636 |
| 580 | Quality of life | 4 | 74 | 1,198 | 1,566 |
| 582 | Signal Transduction | 5 | 73 | 996 | 1,486 |
| 582 | color | 8 | 73 | 100 | 208 |
| 582 | biological agents | 6 | 73 | 440 | 217 |
| 582 | Money | 2 | 73 | 472 | 497 |
| 586 | Nuclear Chemistry | 2 | 72 | 1,285 | 779 |
| 586 | Coastal zone management | 2 | 72 | 837 | 744 |
| 586 | Radiochemistry | 2 | 72 | 1,202 | 696 |
| 586 | Marine resources | 2 | 72 | 839 | 764 |
| 590 | Asymmetric synthesis | 8 | 71 | 17 | 49 |
| 590 | Planets | 5 | 71 | 1,069 | 1,580 |
| 592 | Behavioral research | 5 | 70 | 401 | 483 |
| 593 | Architectural Design | 9 | 69 | 193 | 356 |
| 593 | Parallel Processing | 4 | 69 | 377 | 570 |
| 595 | Combinatorial chemistry | 3 | 68 | 671 | 943 |
| 595 | Metallic Glasses | 5 | 68 | 312 | 473 |
| 595 | Financial management | 2 | 68 | 601 | 670 |
| 595 | International Business | 2 | 68 | 241 | 147 |
| 595 | innovation | 4 | 68 | 521 | 885 |
| 600 | Molecular recognition | 1 | 67 | 457 | 217 |
| 600 | Child welfare | 2 | 67 | 1,324 | 1,059 |
| 600 | Textile industry | 5 | 67 | 356 | 372 |
| 603 | marketing | 9 | 66 | 1,158 | 1,973 |
| 603 | Vision | 2 | 66 | 725 | 728 |
| 605 | Safety management | 8 | 65 | 231 | 503 |
| 605 | Cellulose | 3 | 65 | 613 | 820 |
| 607 | Petroleum Engineering | 3 | 64 | 677 | 729 |
| 608 | Ophthalmology | 1 | 63 | 1,938 | 1,495 |
| 608 | Metabolic diseases | 4 | 63 | 1,500 | 2,022 |
| 608 | eye | 1 | 63 | 343 | 428 |
| 611 | Microscopy | 3 | 62 | 1,392 | 1,230 |
| 612 | Traffic Engineering | 4 | 61 | 342 | 583 |
| 612 | Atmospheric Chemistry | 4 | 61 | 726 | 1,100 |
| 612 | research and development | 2 | 61 | 419 | 485 |
| 615 | Landscape Architecture | 1 | 60 | 362 | 75 |
| 615 | Product Design | 5 | 60 | 380 | 446 |
| 615 | Public Spaces | 1 | 60 | 183 | 73 |
| 615 | Fractional Calculus | 4 | 60 | 92 | 160 |
| 615 | Art and Architecture | 1 | 60 | 10 | 4 |
| 615 | Petroleum | 2 | 60 | 330 | 203 |
| 621 | Occupational Health | 2 | 59 | 1,245 | 979 |
| 621 | industrial hygiene | 2 | 59 | 1,257 | 812 |
| 621 | water reuse | 3 | 59 | 327 | 479 |
| 624 | Psychiatry | 3 | 58 | 3,235 | 3,447 |
| 624 | Data Mining | 7 | 58 | 594 | 1,189 |
| 624 | Proteomics | 2 | 58 | 1,154 | 1,247 |
| 624 | infrared radiation | 5 | 58 | 445 | 559 |
| 624 | Biotransformation | 5 | 58 | 49 | 98 |
| 624 | identity recognition | 5 | 58 | 14 | 46 |
| 630 | Fluid Dynamics | 6 | 57 | 770 | 1,137 |
| 630 | Plate Tectonics | 1 | 57 | 505 | 333 |
| 630 | Quantum Communication | 2 | 57 | 228 | 280 |
| 630 | Earth Sciences | 10 | 57 | 1,832 | 2,975 |
| 630 | plant molecular biology | 3 | 57 | 1,373 | 1,942 |
| 630 | textile fibers | 8 | 57 | 195 | 395 |
| 636 | Food Preservation | 9 | 56 | 360 | 809 |
| 636 | Environmental Geochemistry | 3 | 56 | 570 | 754 |
| 636 | Leukemia | 1 | 56 | 973 | 874 |
| 636 | Minerals | 3 | 56 | 807 | 1,000 |
| 636 | Meteorites | 3 | 56 | 783 | 1,083 |
| 641 | Anatomy | 3 | 55 | 1,755 | 1,813 |
| 641 | Climate change | 5 | 55 | 733 | 1,621 |
| 641 | Optoelectronic devices | 7 | 55 | 587 | 817 |
| 641 | Vaccines | 2 | 55 | 1,761 | 1,725 |
| 645 | nuclear magnetic resonance spectroscopy | 4 | 54 | 631 | 681 |
| 645 | NMR | 4 | 54 | 459 | 499 |
| 645 | magnetic resonance | 4 | 54 | 470 | 510 |
| 648 | Simulation Methods | 5 | 53 | 757 | 1,161 |
| 648 | Evidence-Based Medicine | 5 | 53 | 466 | 928 |
| 648 | Gerontology | 2 | 53 | 2,062 | 1,697 |
| 648 | Hydrocarbons | 5 | 53 | 78 | 107 |
| 652 | Immunotherapy | 4 | 52 | 1,329 | 1,894 |
| 652 | Plant diseases | 2 | 52 | 2,056 | 1,908 |
| 654 | Social Psychology | 11 | 51 | 1,117 | 2,376 |
| 654 | big data | 7 | 51 | 263 | 790 |
| 654 | Muscle contraction | 6 | 51 | 177 | 172 |
| 657 | Clinical Psychology | 3 | 50 | 1,093 | 1,360 |
| 658 | Food Safety | 2 | 49 | 383 | 349 |
| 658 | Molecular Microbiology | 4 | 49 | 677 | 1,166 |
| 658 | Microfabrication | 18 | 49 | 58 | 426 |
| 658 | Nanomanufacturing | 18 | 49 | 12 | 62 |
| 658 | Social policy | 1 | 49 | 1,641 | 1,086 |
| 658 | planning | 1 | 49 | 1,351 | 900 |
| 658 | Economic planning | 1 | 49 | 943 | 739 |
| 665 | Green Technology | 5 | 48 | 223 | 633 |
| 665 | Inflammation | 1 | 48 | 1,499 | 1,466 |
| 665 | Plants | 5 | 48 | 1,580 | 2,298 |
| 668 | Environmental Geology | 3 | 47 | 1,653 | 2,003 |
| 668 | Computer Architecture | 2 | 47 | 683 | 526 |
| 668 | Highway Engineering | 4 | 47 | 321 | 487 |
| 668 | Microprocessors | 2 | 47 | 774 | 678 |
| 668 | Ubiquitous computing | 3 | 47 | 273 | 202 |
| 668 | natural gas | 1 | 47 | 630 | 559 |
| 674 | Occupational Therapy | 1 | 46 | 1,594 | 819 |
| 674 | infrared technology | 3 | 46 | 204 | 143 |
| 674 | India | 6 | 46 | 947 | 1,141 |
| 677 | Fluorescence | 7 | 45 | 212 | 525 |
| 678 | Medical Oncology | 3 | 44 | 1,296 | 1,716 |
| 678 | Quantum Mechanics | 9 | 44 | 53 | 118 |
| 678 | Mortgages | 3 | 44 | 181 | 280 |
| 681 | Pediatrics | 1 | 43 | 2,694 | 2,310 |
| 681 | Marine Ecology | 3 | 43 | 764 | 907 |
| 681 | Inorganic Chemistry | 2 | 43 | 44 | 118 |
| 681 | Geographic information systems | 10 | 43 | 509 | 1,261 |
| 681 | Child | 1 | 43 | 2,875 | 2,279 |
| 681 | Protective coatings | 5 | 43 | 88 | 151 |
| 681 | Roads | 7 | 43 | 431 | 638 |
| 688 | Differential Equations | 8 | 42 | 648 | 1,026 |
| 688 | Wireless Communication | 5 | 42 | 313 | 514 |
| 688 | Family | 7 | 42 | 594 | 1,152 |
| 688 | Computer Literacy | 3 | 42 | 197 | 386 |
| 688 | Genetic therapy | 2 | 42 | 1,004 | 1,218 |
| 693 | Special Education | 1 | 41 | 1,260 | 841 |
| 693 | infection | 4 | 41 | 1,191 | 1,799 |
| 695 | Database Management | 2 | 40 | 883 | 934 |
| 695 | Databases | 2 | 40 | 446 | 464 |
| 695 | Sustainable agriculture | 3 | 40 | 708 | 1,044 |
| 695 | Carcinogenesis | 1 | 40 | 1,282 | 1,259 |
| 695 | Environmental carcinogens | 1 | 40 | 52 | 69 |
| 700 | Neurobiology | 2 | 39 | 1,568 | 1,903 |
| 700 | Machining | 3 | 39 | 144 | 178 |
| 700 | drug development | 4 | 39 | 697 | 1,389 |
| 703 | Naval Architecture | 3 | 38 | 408 | 402 |
| 703 | Thin Films | 3 | 38 | 537 | 620 |
| 705 | Algorithms | 4 | 37 | 624 | 846 |
| 705 | Water Microbiology | 1 | 37 | 891 | 789 |
| 705 | Monomers | 3 | 37 | 63 | 111 |
| 705 | indoor air pollution | 4 | 37 | 293 | 632 |
| 705 | Ventilation | 4 | 37 | 408 | 745 |
| 705 | Sick building syndrome | 4 | 37 | 293 | 632 |
| 705 | Cheminformatics | 3 | 37 | 315 | 600 |
| 705 | United Kingdom | 2 | 37 | 1,546 | 1,712 |
| 705 | Fouling | 1 | 37 | 459 | 463 |
| 714 | Electronic Packaging | 3 | 36 | 215 | 299 |
| 714 | Biogeochemical cycles | 2 | 36 | 468 | 805 |
| 714 | Microwaves | 5 | 36 | 1,046 | 1,319 |
| 717 | Brain-Computer Interfaces | 2 | 35 | 48 | 70 |
| 717 | Interfaces | 2 | 35 | 449 | 477 |
| 717 | families | 5 | 35 | 674 | 1,023 |
| 717 | Plant cells | 2 | 35 | 1,092 | 1,695 |
| 721 | Great Lakes | 1 | 34 | 370 | 356 |
| 722 | Epidemiology | 5 | 33 | 2,466 | 3,765 |
| 722 | Land Use Planning | 1 | 33 | 636 | 676 |
| 722 | Immunopharmacology | 3 | 33 | 991 | 1,485 |
| 722 | Functional foods | 1 | 33 | 707 | 695 |
| 722 | Happiness | 2 | 33 | 593 | 876 |
| 722 | Microfluidics | 2 | 33 | 285 | 418 |
| 722 | cytokines | 3 | 33 | 1,077 | 1,710 |
| 722 | Phytotherapy | 1 | 33 | 1,232 | 1,179 |
| 722 | baking | 1 | 33 | 344 | 336 |
| 731 | Machine Learning | 5 | 32 | 225 | 501 |
| 731 | Combinatorial optimization | 3 | 32 | 540 | 558 |
| 731 | Food service management | 1 | 32 | 791 | 958 |
| 731 | Radiation | 8 | 32 | 1,333 | 2,388 |
| 731 | Biodiversity conservation | 3 | 32 | 1,495 | 2,187 |
| 731 | Eutrophication | 3 | 32 | 882 | 1,668 |
| 731 | venom | 1 | 32 | 1,274 | 1,151 |
| 731 | Toxins | 1 | 32 | 1,406 | 1,269 |
| 731 | impact | 2 | 32 | 374 | 562 |
| 740 | Sedimentology | 2 | 31 | 754 | 976 |
| 740 | Sound | 6 | 31 | 723 | 1,185 |
| 740 | optical pattern recognition | 4 | 31 | 86 | 148 |
| 740 | North America | 4 | 31 | 714 | 1,074 |
| 740 | Insect biochemistry | 2 | 31 | 556 | 747 |
| 745 | Nondestructive testing | 4 | 30 | 577 | 943 |
| 745 | Algebra | 6 | 30 | 1,133 | 1,272 |
| 747 | Psychopharmacology | 2 | 29 | 1,410 | 1,776 |
| 747 | Spectroscopy | 3 | 29 | 173 | 108 |
| 747 | Infrared spectroscopy | 3 | 29 | 302 | 634 |
| 747 | Urban Areas | 3 | 29 | 227 | 380 |
| 747 | Investments | 4 | 29 | 420 | 817 |
| 747 | Oxidation-reduction | 1 | 29 | 1,077 | 1,367 |
| 753 | Nanoelectronics | 2 | 28 | 933 | 946 |
| 753 | Lightweight Materials | 2 | 28 | 37 | 72 |
| 753 | Hospitality industry | 2 | 28 | 547 | 855 |
| 753 | explosives | 2 | 28 | 240 | 210 |
| 753 | mathematical concepts | 5 | 28 | 275 | 545 |
| 758 | Medical Imaging | 1 | 27 | 372 | 363 |
| 758 | Magnetic Resonance Imaging | 1 | 27 | 620 | 603 |
| 758 | Bacteriology | 3 | 27 | 1,596 | 2,466 |
| 758 | Emulsions | 4 | 27 | 300 | 553 |
| 758 | Solutions | 2 | 27 | 532 | 555 |
| 758 | Africa | 4 | 27 | 1,320 | 1,705 |
| 758 | Oxidation | 2 | 27 | 192 | 290 |
| 758 | Biomass | 3 | 27 | 698 | 1,417 |
| 758 | traffic safety | 1 | 27 | 546 | 532 |
| 767 | Geometry | 7 | 26 | 802 | 1,144 |
| 767 | Hydraulic Engineering | 4 | 26 | 732 | 1,211 |
| 767 | Cryptography | 3 | 26 | 686 | 742 |
| 767 | Coding Theory | 1 | 26 | 664 | 439 |
| 767 | Adolescent | 2 | 26 | 2,251 | 2,564 |
| 772 | Global Health | 3 | 25 | 1,063 | 1,597 |
| 772 | Stochastic Processes | 4 | 25 | 810 | 1,263 |
| 772 | gene therapy | 1 | 25 | 1,236 | 1,384 |
| 772 | air quality | 3 | 25 | 202 | 576 |
| 772 | Alzheimer's disease | 2 | 25 | 1,376 | 1,309 |
| 772 | population geography | 3 | 25 | 392 | 697 |
| 772 | gene transfer | 1 | 25 | 461 | 487 |
| 772 | genetic transformation | 1 | 25 | 461 | 487 |
| 780 | Nanomedicine | 2 | 24 | 310 | 656 |
| 780 | nuclear magnetic resonance | 4 | 24 | 814 | 1,125 |
| 780 | Library Science | 2 | 24 | 1,186 | 1,166 |
| 780 | Carbohydrates | 2 | 24 | 519 | 746 |
| 780 | Transplantation | 1 | 24 | 1,135 | 1,216 |
| 780 | Social work | 1 | 24 | 2,063 | 1,751 |
| 786 | Production Planning | 1 | 23 | 556 | 714 |
| 786 | Statistical Mechanics | 4 | 23 | 572 | 833 |
| 786 | Geomagnetism | 2 | 23 | 670 | 870 |
| 786 | Genetic translocation | 2 | 23 | 256 | 393 |
| 786 | drug resistance | 3 | 23 | 684 | 1,341 |
| 786 | Sensor Networks | 5 | 23 | 154 | 420 |
| 786 | Production Control | 1 | 23 | 537 | 711 |
| 786 | structural stability | 1 | 23 | 518 | 658 |
| 786 | Real Estate Investment | 4 | 23 | 138 | 284 |
| 786 | Database Security | 2 | 23 | 110 | 179 |
| 786 | plasmids | 2 | 23 | 256 | 393 |
| 786 | Extreme environments | 1 | 23 | 441 | 587 |
| 798 | radiative transfer | 5 | 22 | 465 | 838 |
| 798 | RNA | 1 | 22 | 774 | 925 |
| 798 | econometric models | 3 | 22 | 660 | 1,163 |
| 801 | Polymer Engineering | 7 | 21 | 21 | 233 |
| 801 | Logistics | 2 | 21 | 732 | 1,171 |
| 801 | Plant Genetics | 1 | 21 | 1,048 | 1,227 |
| 801 | Critical Care | 2 | 21 | 1,269 | 1,746 |
| 801 | Critical Care Medicine | 2 | 21 | 1,210 | 1,689 |
| 801 | Applied Linguistics | 2 | 21 | 765 | 854 |
| 801 | Plant genetic engineering | 1 | 21 | 1,275 | 1,434 |
| 801 | drug therapy | 2 | 21 | 1,771 | 2,298 |
| 801 | plant communities | 1 | 21 | 1,463 | 1,753 |
| 801 | educational innovations | 1 | 21 | 965 | 984 |
| 801 | Cognition | 6 | 21 | 1,177 | 2,273 |
| 812 | Clinical Immunology | 2 | 20 | 1,022 | 1,431 |
| 812 | Immunopathology | 2 | 20 | 1,098 | 1,560 |
| 812 | economic indicators | 2 | 20 | 135 | 209 |
| 812 | Social behavior | 6 | 20 | 803 | 1,777 |
| 812 | Immune system | 1 | 20 | 1,216 | 1,420 |
| 812 | Liver diseases | 1 | 20 | 1,439 | 1,673 |
| 818 | Dermatology | 2 | 19 | 1,527 | 1,860 |
| 818 | Serology | 1 | 19 | 882 | 995 |
| 818 | Boundary Value Problems | 5 | 19 | 593 | 1,144 |
| 818 | Laser therapy | 2 | 19 | 550 | 722 |
| 818 | psychophysics | 2 | 19 | 447 | 552 |
| 818 | Attention | 2 | 19 | 1,540 | 2,051 |
| 818 | Perception | 2 | 19 | 1,644 | 2,104 |
| 818 | Cell communication | 1 | 19 | 937 | 1,206 |
| 826 | Linguistics | 4 | 18 | 1,141 | 1,607 |
| 826 | Physical Geography | 2 | 18 | 633 | 928 |
| 826 | Ethics | 1 | 18 | 1,540 | 1,471 |
| 826 | Antenna Arrays | 2 | 18 | 636 | 940 |
| 826 | Cognitive Therapy | 1 | 18 | 993 | 1,122 |
| 826 | Professional ethics | 1 | 18 | 558 | 663 |
| 832 | Geology | 3 | 17 | 2,514 | 3,377 |
| 832 | Orthopedics | 1 | 17 | 1,707 | 1,782 |
| 832 | Pharmacogenetics | 1 | 17 | 1,221 | 1,427 |
| 832 | Plasma chemistry | 1 | 17 | 665 | 771 |
| 832 | Ferroelectricity | 7 | 17 | 668 | 1,291 |
| 832 | Graphene | 1 | 17 | 263 | 424 |
| 832 | Therapeutics | 1 | 17 | 1,965 | 2,279 |
| 832 | Post-traumatic stress disorder | 1 | 17 | 1,166 | 1,333 |
| 832 | Approximation Theory | 4 | 17 | 378 | 641 |
| 832 | Cell metabolism | 1 | 17 | 1,017 | 1,300 |
| 832 | Genes | 1 | 17 | 1,579 | 1,736 |
| 843 | Econometrics | 2 | 16 | 1,582 | 1,791 |
| 843 | Supply Chain Management | 1 | 16 | 69 | 71 |
| 843 | Integrative Medicine | 1 | 16 | 535 | 493 |
| 843 | Gene expression | 5 | 16 | 174 | 577 |
| 847 | Software Engineering | 4 | 15 | 877 | 1,512 |
| 847 | Human Geography | 1 | 15 | 1,675 | 1,691 |
| 847 | Urban Transportation | 1 | 15 | 302 | 362 |
| 847 | Radio wave propagation | 4 | 15 | 613 | 1,108 |
| 847 | Broadcasting | 2 | 15 | 246 | 445 |
| 847 | Radio | 2 | 15 | 1,531 | 1,988 |
| 847 | Aquaculture | 3 | 15 | 1,389 | 2,137 |
| 854 | Mining Engineering | 2 | 14 | 654 | 871 |
| 854 | Seismology | 4 | 14 | 410 | 834 |
| 854 | Quantum Chemistry | 1 | 14 | 339 | 358 |
| 854 | Liquid Crystals | 12 | 14 | 408 | 1,123 |
| 854 | Technology Assessment | 1 | 14 | 859 | 1,299 |
| 854 | Integrated Circuits | 10 | 14 | 375 | 1,046 |
| 854 | environmental remediation | 3 | 14 | 353 | 970 |
| 854 | Geobiology | 1 | 14 | 688 | 887 |
| 854 | Sulfur | 2 | 14 | 148 | 249 |
| 854 | atmospheric models | 2 | 14 | 698 | 1,098 |
| 854 | High performance computing | 3 | 14 | 48 | 118 |
| 854 | Autoimmune diseases | 1 | 14 | 825 | 1,112 |
| 854 | Trace elements | 1 | 14 | 535 | 802 |
| 867 | Speech-Language Pathology | 2 | 13 | 363 | 637 |
| 867 | Chemotherapy | 1 | 13 | 1,438 | 1,699 |
| 867 | Organizational learning | 2 | 13 | 647 | 1,149 |
| 867 | Research Design | 2 | 13 | 1,275 | 1,947 |
| 867 | Multivariate Analysis | 1 | 13 | 881 | 964 |
| 867 | Chemical safety | 1 | 13 | 92 | 75 |
| 867 | Knowledge management | 2 | 13 | 595 | 1,068 |
| 867 | Liposomes | 1 | 13 | 949 | 1,105 |
| 867 | automatic speech recognition | 2 | 13 | 185 | 436 |
| 867 | Lipid bilayers | 1 | 13 | 790 | 880 |
| 867 | cell physiology | 1 | 13 | 1,732 | 2,211 |
| 878 | Risk Management | 1 | 12 | 1,220 | 1,475 |
| 878 | Mental Disorders | 2 | 12 | 2,628 | 3,629 |
| 878 | technology transfer | 1 | 12 | 563 | 753 |
| 878 | Respiratory system | 1 | 12 | 781 | 1,025 |
| 878 | Cardiovascular diseases | 1 | 12 | 1,884 | 2,091 |
| 878 | Environmental risk assessment | 1 | 12 | 783 | 988 |
| 878 | medical education | 1 | 12 | 2,382 | 2,639 |
| 878 | Respiration | 1 | 12 | 1,772 | 2,153 |
| 878 | Insects | 2 | 12 | 1,640 | 2,177 |
| 878 | Structure-activity relationship | 2 | 12 | 315 | 621 |
| 878 | Entomology | 2 | 12 | 2,502 | 3,063 |
| 889 | Agricultural Biotechnology | 1 | 11 | 595 | 555 |
| 889 | Fishery management | 2 | 11 | 989 | 1,517 |
| 889 | Risk | 2 | 11 | 643 | 1,153 |
| 889 | Teaching | 1 | 11 | 2,642 | 2,769 |
| 889 | economic conditions | 1 | 11 | 836 | 946 |
| 889 | Dementia | 1 | 11 | 1,678 | 1,509 |
| 889 | organization | 1 | 11 | 1,269 | 1,580 |
| 889 | Uncertainty | 2 | 11 | 236 | 414 |
| 897 | Geriatric Medicine | 1 | 10 | 324 | 501 |
| 897 | Economic Development | 2 | 10 | 1,800 | 2,654 |
| 897 | Tissue Engineering | 1 | 10 | 633 | 852 |
| 897 | health services accessibility | 2 | 10 | 1,099 | 1,812 |
| 897 | soil management | 1 | 10 | 900 | 1,259 |
| 897 | Noise | 2 | 10 | 189 | 370 |
| 897 | Ethnology | 1 | 10 | 2,235 | 2,256 |
| 897 | foods | 1 | 10 | 286 | 465 |
| 897 | brewing | 2 | 10 | 241 | 450 |
| 897 | Ion channels | 1 | 10 | 217 | 330 |
| 897 | Tropical Medicine | 1 | 10 | 2,371 | 2,794 |
| 897 | psychotherapy | 1 | 10 | 1,738 | 1,942 |
| 897 | Mountains | 1 | 10 | 804 | 934 |
| 897 | Radio frequency | 1 | 10 | 697 | 950 |
| 911 | Hematology | 1 | 9 | 2,107 | 2,413 |
| 911 | Geomorphology | 1 | 9 | 1,867 | 2,377 |
| 911 | Molecular Pharmacology | 1 | 9 | 1,164 | 1,615 |
| 911 | Development Economics | 3 | 9 | 420 | 1,007 |
| 911 | Information Retrieval | 5 | 9 | 321 | 1,083 |
| 911 | consumer behavior | 1 | 9 | 998 | 1,379 |
| 911 | Regeneration | 1 | 9 | 139 | 251 |
| 911 | Rheology | 1 | 9 | 907 | 1,169 |
| 911 | Water Conservation | 1 | 9 | 176 | 306 |
| 911 | Water quality | 1 | 9 | 544 | 860 |
| 911 | Geriatric Oncology | 1 | 9 | 815 | 1,153 |
| 911 | Harmonic Analysis | 1 | 9 | 288 | 408 |
| 911 | Alloys | 2 | 9 | 387 | 540 |
| 911 | Water chemistry | 1 | 9 | 783 | 1,077 |
| 911 | cycles | 1 | 9 | 357 | 393 |
| 911 | silicon | 1 | 9 | 740 | 918 |
| 911 | language | 2 | 9 | 982 | 1,453 |
| 928 | Urban Economics | 1 | 8 | 593 | 800 |
| 928 | Phytochemistry | 2 | 8 | 402 | 1,003 |
| 928 | Health Policy | 1 | 8 | 2,902 | 3,437 |
| 928 | Public Administration | 1 | 8 | 2,033 | 2,224 |
| 928 | Psychosomatic Medicine | 1 | 8 | 1,104 | 1,513 |
| 928 | Computational Linguistics | 2 | 8 | 748 | 1,196 |
| 928 | Organizational change | 3 | 8 | 755 | 1,648 |
| 928 | Phytoremediation | 2 | 8 | 402 | 1,003 |
| 928 | Bioreactors | 2 | 8 | 402 | 1,003 |
| 928 | Turbulence | 1 | 8 | 410 | 545 |
| 928 | analysis | 1 | 8 | 548 | 705 |
| 928 | Transport | 1 | 8 | 949 | 1,329 |
| 928 | Medical innovations | 2 | 8 | 993 | 1,880 |
| 928 | Finite Element Method | 1 | 8 | 567 | 766 |
| 928 | Sea | 1 | 8 | 847 | 1,185 |
| 928 | Fishery resources | 1 | 8 | 935 | 1,288 |
| 928 | biomimicry | 2 | 8 | 227 | 527 |
| 928 | administrative agencies | 1 | 8 | 552 | 657 |
| 928 | Development | 1 | 8 | 1,251 | 1,661 |
| 928 | Yeast | 1 | 8 | 694 | 974 |
| 928 | data protection | 3 | 8 | 599 | 1,312 |
| 949 | Environmental Psychology | 1 | 7 | 661 | 1,064 |
| 949 | Aesthetics | 1 | 7 | 389 | 283 |
| 949 | Art Criticism | 1 | 7 | 190 | 168 |
| 949 | Endocrine glands | 1 | 7 | 436 | 698 |
| 949 | Feminism | 1 | 7 | 1,006 | 1,160 |
| 949 | curriculum evaluation | 1 | 7 | 702 | 1,002 |
| 949 | women | 1 | 7 | 1,476 | 1,639 |
| 956 | Oceanography | 1 | 6 | 2,107 | 2,682 |
| 956 | Music Therapy | 1 | 6 | 411 | 645 |
| 956 | Art Therapy | 1 | 6 | 385 | 600 |
| 956 | Virtual reality | 2 | 6 | 510 | 1,035 |
| 956 | Fermentation | 1 | 6 | 415 | 609 |
| 956 | Dance therapy | 1 | 6 | 348 | 535 |
| 956 | Learning disabilities | 1 | 6 | 1,257 | 1,631 |
| 956 | Socioeconomic Factors | 1 | 6 | 1,310 | 1,968 |
| 956 | Plant tissue culture | 1 | 6 | 1,125 | 1,560 |
| 956 | Marriage | 1 | 6 | 876 | 1,253 |
| 956 | water supply | 1 | 6 | 1,312 | 1,850 |
| 956 | energy transfer | 1 | 6 | 25 | 47 |
| 956 | Microstructure | 2 | 6 | 1,178 | 1,766 |
| 956 | Soviet Union | 3 | 6 | 700 | 1,375 |
| 956 | Plant cell culture | 1 | 6 | 1,047 | 1,535 |
| 971 | Transportation Engineering | 2 | 5 | 379 | 804 |
| 971 | Nuclear Medicine | 1 | 5 | 1,150 | 1,387 |
| 971 | Fuzzy Logic | 1 | 5 | 146 | 302 |
| 971 | Psycholinguistics | 1 | 5 | 1,328 | 1,763 |
| 971 | Neurotoxicology | 1 | 5 | 965 | 1,577 |
| 971 | Kinetics | 2 | 5 | 638 | 1,297 |
| 971 | Neurolinguistics | 1 | 5 | 673 | 972 |
| 971 | Educational Psychology | 1 | 5 | 2,057 | 2,650 |
| 971 | Change management | 1 | 5 | 249 | 427 |
| 971 | Molecular Imaging | 1 | 5 | 763 | 1,039 |
| 971 | Fuzzy Sets | 1 | 5 | 145 | 302 |
| 971 | Bibliometrics | 1 | 5 | 297 | 527 |
| 971 | Industrial Policy | 1 | 5 | 823 | 1,152 |
| 971 | Speech Disorders | 1 | 5 | 1,334 | 1,705 |
| 971 | Mycology | 1 | 5 | 2,047 | 2,593 |
| 971 | organizational effectiveness | 1 | 5 | 869 | 1,227 |
| 971 | nucleotides | 1 | 5 | 561 | 701 |
| 971 | Arthropods | 1 | 5 | 520 | 836 |
| 971 | Radio waves | 1 | 5 | 1,191 | 1,556 |
| 971 | Fuzzy algorithms | 1 | 5 | 145 | 302 |
| 971 | Fungi | 1 | 5 | 1,434 | 1,939 |
| 971 | Prospecting | 1 | 5 | 196 | 345 |
| 971 | Semiconductor industry | 1 | 5 | 929 | 1,228 |
| 971 | Speech | 1 | 5 | 1,303 | 1,693 |
| 995 | Political Science | 2 | 4 | 1,868 | 2,478 |
| 995 | Philosophy | 4 | 4 | 1,319 | 1,840 |
| 995 | Sustainable Architecture | 2 | 4 | 226 | 547 |
| 995 | Industrial Organization | 1 | 4 | 572 | 848 |
| 995 | Underwater acoustics | 2 | 4 | 101 | 226 |
| 995 | Noise control | 4 | 4 | 214 | 253 |